Ive kept tropical for years and have now got coldwater fish. They are so much more interesting to watch especially the weather loaches. Didnt realise you shouldnt keep regular goldfish with fancys (should have done my research) but it is turning out ok. Got 3 fancys and 2 goldfish . At first one of the goldfish was constantly nipping the fins of the fancies so i stuck him in a bag and floated him overnight in the tank , that was 2 days ago and now they are all hunky dorey lol.